Sbordone, L. Stellar Astrophysics, MPI for Astrophysics, Max Planck Society;
Pancino, E., Mucciarelli, A., Sbordone, L., Bellazzini, M., Pasquini, L., Monaco, L., et al. (2011). The subgiant branch of ω Centauri seen through high-resolution spectroscopy - I. The first stellar generation in ω Cen? Astronomy & Astrophysics, 527: A18, pp. 1-15. doi:10.1051/0004-6361/201016024.